メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.371705555367 43.1013509393141, 141.371582699327 43.1018338384624, 141.371486051225 43.1022223494755, 141.370942407468 43.1021437051978, 141.370388294862 43.1020725028789, 141.369742362279 43.1019858944356, 141.369841188426 43.1016201146387, 141.370063083766 43.1007303687267, 141.370659976641 43.1008091457776, 141.371159402688 43.1008715593858, 141.3717989479 43.1009616279663, 141.371705555367 43.1013509393141)) ^^http://www.opengis.net/ont/geosparql#wktLiteral